Rev Cboards can be either Verion 3or 4. The
differences are all parts values: Rev Dboards are all version 5.
Rev Eboards are all version
6.
Rev Bwas not produced.
750309 COMPREV A
Version
RIOI
RI03
Rl25
Rl30
Rl31
Rl32
Rl33
Rl54
Rl62 Rl68
Rl70
Cl33
382K 82K 6.2K 1.5K 1.5K 1.5K 1.5K 5.6K
9.lK
68K
68K
lO~F
4
200K
200K
4.7K
4.7K 4.7K 4.7K 4.7 8.2K 3.9K 15K 10K
22~F
RECEIVE
BOARD
The
BTR-200
uses one
of
two receive boards.
Figure
6
Location
of
Rev Level
for
Versions 1
and
2
Early production units came with 70714000, and
750309 was installed in later units. 70714000
came in two versions that differed slightly (See
table below):
Version 2was built only with Rev Cboards.
Version 1was built with Rev A, B, or Cboards.
Thedifferent revisionson this board were manufac-
turing changes that did not change the schematic.
750309 Rev Aboards are version
1.
750309 Rev
Band
Cboards are version
2.
Some early version 1boards did not have ashield
over the oscillator section
..
70714000
R327
R345 R363 R381 VR302 VR304 VR306 VR308
Version
14.7K 4.7K 4.7K 4.7K 10K 10K 10K 10K
210K 10K 10K 10K 20K 20K 20K 20K
2-2